Mold arrangement, especially for typographical composing apparatus or machines



March 23, 1954 H. G. CROUCHER 2,672,975

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Patented Mar. 23, 1954 2,672,975 MOLD ARRANGEMENT, ESPECIALLY FOR TYPOGRAPHICAL CO TUS OR MACHINES Henry George Croucher,

Clowes & Sons Limited,

signor to William Beccles, England MPOSIN G APPARA- Beccles, England, as-

Application July 27, 1951, Serial No. 238,852

Claims priority, application August 2, 1950 50 Claims.

This invention relates to moulds and mould arrangements for the casting of type bodies and is especially although not exclusively concerned with moulds and mould operating and line collecting arrangements for use in composing machines or apparatus ofthe single type or single letter class, as for examples such as are known under the registered trade-mark Monotype.

It is an object of the invention to provide an improved mould for the casting of type and particularly high and low space type bodies in which provision is made for variation of the dimension of the mould in the direction of the depth of the type in addition to its Width so that such type bodies of diiferent point sizes may be satisfactorily cast without the necessity of providing separate suitably dimensioned moulds for this purpose. A further object is to provide a variable mould of the above character in which a satisfactory flow of casting metal to the mould face or matrix is ensured irrespective of the size mould has been adjusted. A furhaving the ther object is to provide a mould I employed in above characteristics which can be conjunction with existing composing machines or apparatus of the kind referred to above. A further object is to provide an adjustable mould such that when used with existing matrices on existing machines the type face is cast in the desired position on the type body so vide means for efiecting the adjustment of an improved mould as above under the control of record-bearing means such as by the use of perforated strip controlled pneumatic devices as used in conjunction with known composing maadjustment of the mould in conjunction with means for'making up and correcting typographical matter according to patent application No. 229,342, filed June 1, 1951'.

The invention comprises a mould having two that adjust- 'ment of the machine to obtain accurate alignment is eliminated. A further object is to pro- A further object is to provide improved blades and the cross block, and a.

Great Britain (cr sis-93) inlet so that the latter can be disposed at or near the mid point of the variable dimension of the mould as determined by the positions of the blades in relation to the cross block.

The invention also comprises a mould having two or more mould dimensioning blades arranged side by side and movable between lateral uides or blocks in relation to a cross block to form a mould cavity of the desired size between the ends of the blade or blades and the cross block according to the number of blades Withdrawn from the latter, in which each blade comprises upper and lower blade parts for the casting of high or low space type bodies as required.

The invention also comprises a mould arrangement according to either of the preceding paragraphs in which the mould dimensioning blades and lateral guides or blocks are secured to an intermediate plate, which intermediate plate is mounted for sliding adjustment upon the mould base or foundation plate having a casting metal inlet. In an alternative arrangement there is provided a stationary intermediate plate on the mould base and the mould blades and their lateral guides are adjustably arranged relatively to said plate. The above displacements may be effected by hand or automatically, and according to a further feature of the invention, means is provided for in accordance with tower selection as described in the specification of patent application No. 229,342, filed June 1, 1951, or in accordance with sizing. means as described in the specification of patent application No. 230,642, filed June 8, 1951.

According to a further feature of the invention, means is provided for regulating the factors of mould cooling, metal heating, speed of operation, or metal pump discharge, or all of them, in accordance with the adjusted mould size.

According to a further feature of the invention, means is provided for automatically. adjusting the means for collecting the type and removing the collected type to the galley in accordancewith the adjusted mould size.

According to a further feature of the inven tion, visible means are provided for showing the necessity for die case changing and for indieating the adjusted mould size.

Figure 1 is a front elevation, partly in section and more or less diagrammatic, of a mould constructed and arranged in accordance with the invention;

Figure 2 is a plan view of the base and intermediate plate of another mould constructed in accordance with the invention, showing the actuating and locking means;

Figure 3 is a plan view of the complete mould of Figure 2 with the cover plates removed, constructed and arranged in accordance with the invention;

Figure 4 is a perspective view of a means for engaging a lower mould blade;

Figure 5 is a cross section of the mould taken on the line 5-5 of Figure 3;

Figure 6 is a cross section of the mould taken on the line iii- 5 of Figure 3;

Figure '7 a cross section on the line 'l-'i of Figure 3;

Figure 8 is an end view of arrangement;

Figure 9 is a plan view ment of Figure 8;

Figure 10 is a diagram showing the relation of of the mould taken the mould blade stop of the stop arrangethe mould blades to the stop arrangement in different positions of the blades;

Figure 11 is a perspective view showing an alternative arrangement of mould blades and means for retaining them in position;

Figure for adjusting a mould according to the invention and suitable for operation by automatic means;

Figure 13 is a front view, partly in section, of a mould showing an alternative mode of adjusting the mould blades;

Figure 14 is a side View of a mould blade separating member showing provision for cooling air flow;

Figure 15 is a side view of a mould blade showing provision for cooling air flow;

Figure 1G is a front view of a cross block showing provision for air cooling;

Figure 1.? is a plan view of the cross, Figure 16;

Figure 18 is a plan view of a mechanism for manual control of the mould adjustments;

Figure 19 is a plan view toan enlarged scale of part of the mechanism of Figure 18;

Figure 20 is a side view of the mechanism of Figure 19;

Figure 21 is a side view of the controlling block mechanism;

Figure 22 is a front view, to an enlarged scale, in section, of a mould blade arrangement for the casting of large type of stand-u initials;

Figure 23 is a typographical illustration of such an initial;

Figure 24 is a front view, to an enlarged scale, in section, of a mould blade arrangement for the casting of large type for initials occupying two or more lines;

Figure 25 is a typographical illustration an initial occupying two lines of type;

Figure 26 is a side view of part of the manual control mechanism;

Figures 27A and 27B are side elevations, to an enlarged scale, in section, of an eccentric centering pin arrangement showing the pin in different positions;

Figure 28 is a sectional plan view of actuating means for the centering pin of Figures 27A and 2713;

Figure 29 is a side elevation,v in section, of the mounting of the above ecce tric centering pin;

block of of such 12 is a perspective view showing nrrea-ns Figure 30 is a general perspective view of the complete control mechanism;

Figure 31 is a plan view of the line control mechanism;

Figures 32 and 32A form a perspective view of the panel A control mechanism;

Figure 33 is an elevation of mechanism for engaging the pump latch;

Figure 34 is a perspective view of control mechanism for cooling water and air;

Figure 35 is a perspective view of release mechanism for pump latch engagement.

The invention will be described as applied by way of example to a mould having the general features of those used in single type composing machines known under the registered trade-mark Monotype. Such moulds comprise essentially a mould dimensioning blade movable longitudinally between guide blocks in relation to a cross block so that the spacing of the end of the blade from the cross block determines the width of the cast type body. The blade and guide blocks are carried by an intermediate plate secured to a foundation or base plate and an inlet aperture in the said base plate allows the casting metal to be injected into the mould space, the opposite end of which is closed by the mould face or matrix. The cross block is slidable in the foundation plate transversely with respect to the blade and carries a cam actuated jet blade which ejects the tang or solidified jet from the cast type body and is coupled to a type carrier for collecting the type when the latter is ejected from the mould.

In carrying the invention into effect according to one convenient mode as applied to a mould of the above general character and as illustrated in Figures 1 and 2 which show a mould carrying four mould blades, there is shown at l a matrix of known form which can be caused to descend for casting purposes and which is held clamped in casting position by a coned pin The mould face is indicated at 3, this forming withv the known cross block of the mould the necessary bearing surface and seal for the matrix during casting. The upper surface 4 of the usual intermediate plate, or other bed, acts as a surface for forming the type foot and constitutes a seal to confine the entering molten metal to the mould space which is defined by the withdrawn mould blade to a dimension determined by the usual known wedge and mould abutment mechanisms. The height of the type body from the foot to the type face is therefore the distance from the surface 4 to the surface 3 plus the depth of the strike or recessed part of the matrix as indicated at 5. This latter dimension varies with diiie ent kinds of type, being usually .05 or .065" in Great Britain and .03" or .065" in the United States of America. The intermediate plate 5 which acts as a seal for the end of the jet or tang of the cast type body is formed with an integral wall 1. The mould base or foundation plate 8 has a nozzle aperture Ba for the nozzle carrying the molten metal which is aligned with a nozzle aperture 9 in a cam plate Hi secured. to the base plate 8, allowing the casting metal to be in ected into the mould space in the usual manner. The cam plate IE is provided with a cam track nm as shown in Figure 2 for actuating the jet blade of the usual cross block for ejecting the tang or solidified jet from the cast type body. In Figure 1,. the line X-X represents. the theoretical datum or axis between the centre of the matri-a whatever the dimensionof :9 and all movements of blades, any one of which being left in position, a

ving member and a side 'form'comprising two blades side by side shown at I9 and 2!}, each of lower blades. Thus for example the blade be of 6 point point size, so that if both blades are withdrawn the latter, and the centre of the nozzle aperture mould blades as described later are'relative to this datum or axis. block II is secured to the intermediate plate 6,

a clamping block l2 which can be held by means of screw, spring or other suitable means against the blades, thereby ensuring that the mould cavity shall be square with respect to the cross block.

A mould blade I 4 is shown in operative position, i. e. aligned withthe axis X-X, and a second mouldblade as is shown in non-operative position. Between theblades I4 and I 5 is a blade separating member l3 which is tive of the position of the intermediate plate. The I passage I8 communicates through a branch Iila with the water space of the separating member I3 and similar branches communicate with the water spaces of separating members Ida and lilb and with water spaces i the side blocks II and I2. It will be noted that there are four mould can be brought into operative position along the line X-X by an appropriate displacement of the intermediate plate 6.

Whilst the mould blades maybe single blades of full type height as is well known, as a cut-01f blade, being tinuation of the front face of the lower blade. Separate displacing means are provided for the upper and lower blades, and when the lower blade only is withdrawn, the upper or cut-off blade type body known as a low space of less than full type height will be cast. An upper or cut-off blade is shown at Ilia and a lower blade is shown at it?) in Figure 1.

If desired, the mould blade means between two blade separating members, or between a separatblock, may be of composite which comprises upper and V l 9 may size and the blade 28 may be of 8 simultaneously a mould cavity of 14 point size is afiforded. Thus if the blades liia and I 512 are of 10 point size, if the blade I t is 11 point, and if the blade I5 is 12 point, there is provided a mould afiording six type sizes,'namely 6, 8, 10,

'11, 12 or 14 point, any one of which can be brought into use by an appropriate displacement of the intermediate plate 5 which may be by as described hereinafter.

12a (for example) on the block' 12. These are of providing the conventional for the purpose below the upper surface of the plate.

so-called nicks on the cast type body for use when hand setting is employed. It will that the nicks as shown on the blade separating members and on the blocks It and I2 in Figure l are identical, and consequently the mould blades can be interchangeable for any desired sequence of type depth sizes. Figure 1 thus illustrates more or less diagrammatically the underlying principle of the invention, a further embodiment of which will now be described in greater detail.

Referring to Figure 2, which shows the base piate, intermediate plate, and their actuating and locking means only, the base plate 8 is pro vided with a displaceable intermediate plate 6, it also has secured to it a cam plate I 0 having as in th conventional mould, for ejecting the tang or solidified jet from the cast type body. The tang is ejected through a cavity 2! by engagement with a fixed projection 22 as the cross block is moved to the right as viewed in the figure, the arrangement being such that the fixed projection 22 is not affected by any position of the intermediate plate.

A lever 23 for actuating the intermediate plate is pivoted at 2t on the base plate 8 and may be connected by an eye 25 to any suitable operating means. A head 26 on the said crank is engaged in a complementary recess in the underside of the intermediate plate, by which means the said plate can be displaced to the right as viewed in the figure to any position between the limits constituted by end 29, the plate being shown in its extreme left hand position. Means is between the stops 28 the intermediate plate which are shaped to conform to the wedge surfaces. The wedges are interconnected by a link 32 having slots 33 and 3d engaging pins on the wedges. The link 32 is hinged at 35 and 36 and is pivotally connected at 38 to an actuating lever 3? pivoted at 39 to a fixed bracket 45?, the lever 37 being connected by an eye ll to any suitable manual or other controlling means. With this arrangement the movement of the lever 37 is maintained in the horizontal plane whilst the wedges slide along planes which are inclined to the horizontal as seen in Figure 7, the hinge connections 35 and ii permitting the rise and fall of the wedges.

The arrangement is such that the mould blades, which are held between the blocks I i and 52 (see Figure 1) and against the intermediate plate wall 1, can be positioned relative to the X-X by actuation of the crank 23, and can be locked in desired position by operation of the wedges 3t and 3! by lever31. To prevent lifting of the intermediate plate from any cause and to prevent movement thereof other than parallel to the cross block, a retaining bar 22 extends between a wall and a wall 29, this car being accommodated in a recess in the intermediate plate 6 with its upper surface about a thousandth of an inch shown in Figures 6 and 7. The ends of the bar '32 are extended laterally as seen in Figur 2 and are screwed to the walls 235 and 23. -The cooling-water passages previously referred to in connection with Figure 1 are shown at I 5 and Ice,

walls or stops 28 and I and 29 and the ends of means of the 

